Windows 10: Modified system reserved partition but now no boot device found error

Discus and support Modified system reserved partition but now no boot device found error in Windows 10 BSOD Crashes and Debugging to solve the problem; I actually tried to modify the system reserved partition size so that the recent windows update can be installed without error on my hp 15ac122tu... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by Rohitbabu, Dec 12, 2018.

  1. ROHITBABU
    Rohitbabu Win User

    Modified system reserved partition but now no boot device found error


    I actually tried to modify the system reserved partition size so that the recent windows update can be installed without error on my hp 15ac122tu machine which is i3 5th gen. I tried to modify the size using mini partition tool by creating 500mb unallocated space and expanding the system reserved partition with that unallocated space. After the operation, the system falied to boot into any of the operating systems (my machine has ubuntu 18.04 LTS and windows 10 installed using dual boot) . I think the problem occurred beacuse the modified system reserved partition is not recognized at the time of boot. I tried using diskpart utility, dism, scanning file system using the cmd at advanced options. Please help me to get out of this. Any help will be appreciated.

    Thanks in advance Modified system reserved partition but now no boot device found error :)

    :)
     
    Rohitbabu, Dec 12, 2018
    #1
  2. ANTHONY GAL
    Anthony Gal Win User
    Anthony Gal, Dec 12, 2018
    #2
  3. FRCRAIG
    Frcraig Win User
    Two System Reserve Partitions

    I have two hard drives on my computer, an SSD with my operating system (Windows 8.1 which I just successfully upgraded to Windows 10) and an hdd for additional storage. After upgrading to Windows 10 I noticed that I now have two System Reserve Partitions.
    One partition is on the SSD and the other is on the hdd. Both contain bootmgr and similar files. The files on the hdd have newer file modified/created dates than those on the ssd System Reserve partition. If I set my BIOS to boot from the SSD I get the
    blue screen message "no bcd found". If I set the BIOS to boot from the hdd it takes over a minute, but Windows 10 boots fine.

    I'm guessing that the System Reserve partition on the hdd (storage hard drive) contains the boot files for Windows 10, but Windows 10 is not installed on that drive, it is installed on the SSD (which I think has the old Windows 8.1 boot files on its own
    System Reserve partition).

    I've given the two System Reserve partitions drive letters so that I can see the contents of the drives. Can I simply copy the contents of the newer System Reserve partition onto the older System Reserve partition so that Windows 10 will boot from the same
    SSD that it is installed on?

    Thanks for any suggestions,

    Craig
     
    Frcraig, Dec 12, 2018
    #3
  4. JOHAN45
    Johan45 Win User

    Modified system reserved partition but now no boot device found error

    Win7 System Reserved Partition Full

    Isn't that what the system reserved partition is ? Or is it just a backup incase the windows boot files get corrupt?
     
    Johan45, Dec 12, 2018
    #4
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Modified system reserved partition but now no boot device found error

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